Вариант 4 ИДЗ 4.2

№1.4. Build the surface and determine their type a) 4 x2 - 8y2 + z2 + 24 = 0; b) x2 - y = - 9z2.
No. 2.4. Write the equation and determine the type of surface obtained by rotating this line around the specified axis of coordinates, make a picture: a) 3y2 - 4z2 = 12; Oz; b) y = 4; z = 2; Ox.
No. 3.4. Build a body bounded by the specified surfaces: a) z = 5y; x2 + y2 = 16; z = 0.
b) x + y + z = 5; 3x + y = 5; 2x + y = 5; y = 0; z = 0.